diff --git a/CMakeLists.txt b/CMakeLists.txt
index a31964b..73394bb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -323,9 +323,7 @@ include(ExternalProject)
 set(EXTERNAL_INSTALL_LOCATION ${CMAKE_BINARY_DIR}/external)
 externalproject_add(
   tclap
-  GIT_REPOSITORY http://git.code.sf.net/p/tclap/code
-  GIT_TAG 1.4.0-rc1
-  GIT_SHALLOW TRUE
+  URL ${CMAKE_SOURCE_DIR}/tclap-1.4.0-rc1.tar.gz
   PREFIX ${EXTERNAL_INSTALL_LOCATION}
   SOURCE_DIR ${EXTERNAL_INSTALL_LOCATION}/tclap
   CMAKE_COMMAND ""
@@ -338,9 +336,7 @@ include_directories(SYSTEM ${EXTERNAL_INSTALL_LOCATION}/tclap/include)
 
 externalproject_add(
   rapidjson
-  GIT_REPOSITORY https://github.com/Tencent/rapidjson.git
-  GIT_TAG v1.1.0
-  GIT_SHALLOW TRUE
+  URL ${CMAKE_SOURCE_DIR}/rapidjson-v1.1.0.tar.gz
   PREFIX ${EXTERNAL_INSTALL_LOCATION}
   SOURCE_DIR ${EXTERNAL_INSTALL_LOCATION}/rapidjson
   CMAKE_COMMAND ""
@@ -357,9 +353,7 @@ include_directories(SYSTEM ${EXTERNAL_INSTALL_LOCATION}/rapidjson/include)
 
 externalproject_add(
   tabulate
-  GIT_REPOSITORY https://github.com/p-ranav/tabulate.git
-  GIT_TAG v1.4
-  GIT_SHALLOW TRUE
+  URL ${CMAKE_SOURCE_DIR}/tabulate-v1.4.tar.gz
   PREFIX ${EXTERNAL_INSTALL_LOCATION}
   SOURCE_DIR ${EXTERNAL_INSTALL_LOCATION}/tabulate
   PATCH_COMMAND sed -i "39d" "${EXTERNAL_INSTALL_LOCATION}/tabulate/include/tabulate/column.hpp"
@@ -379,9 +373,7 @@ include_directories(SYSTEM ${EXTERNAL_INSTALL_LOCATION}/tabulate/include)
 
 externalproject_add(
   sole
-  GIT_REPOSITORY https://github.com/r-lyeh-archived/sole.git
-  GIT_TAG 1.0.2
-  GIT_SHALLOW TRUE
+  URL ${CMAKE_SOURCE_DIR}/sole-1.0.2.tar.gz
   PREFIX ${EXTERNAL_INSTALL_LOCATION}
   SOURCE_DIR ${EXTERNAL_INSTALL_LOCATION}/sole
   PATCH_COMMAND patch